(()=>{
    console.log('测试')
    //布尔类型
    let flag:boolean = false;
    console.log(flag)
    //数字类型 
    let a1:number = 10
    console.log(a1)
    //字符串
    let name:string = '字符串'
    let name2:string='balala'
    console.log(name,name2)//带空格
    console.log(`${name},${name2}`)//带逗号

})()